Define vs Explain

When to use each in English, with meaning, register, and examples.

Define

Top 1,000 (very common)B1verb

Explain

Top 1,000 (very common)A1verb
 DefineExplain
Pronunciation🇬🇧 /["/dɪˈfaɪn/","/dɪˈfaɪnz/","/dɪˈfaɪnd/","/dɪˈfaɪnɪŋ/"]/🇺🇸 /["/dɪˈfaɪn/","/dɪˈfaɪnz/","/dɪˈfaɪnd/","/dɪˈfaɪnɪŋ/"]/🇬🇧 /["/ɪkˈspleɪn/","/ɪkˈspleɪnz/","/ɪkˈspleɪnd/","/ɪkˈspleɪnɪŋ/"]/🇺🇸 /["/ɪkˈspleɪn/","/ɪkˈspleɪnz/","/ɪkˈspleɪnd/","/ɪkˈspleɪnɪŋ/"]/
MeaningTo explain the meaning of a word or idea.To make something clear or easy to understand.
ExampleCan you define the term 'photosynthesis' for us?Can you explain how this machine works?
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelB1A1
Part of speechverbverb
Collocationsaccurately, carefully, correctly, be difficult to, be impossible to, be easy to, as, by, in terms of, accurately, carefully, correctly, be difficult to, be impossible to, be easy to, as, by, in terms ofin detail, fully, adequately, be able to, be unable to, can, about, to, explain everything, go a long way, some way, etc. towards/​toward explaining something, in detail, fully, adequately, be able to, be unable to, can, about, to, explain everything, go a long way, some way, etc. towards/​toward explaining something
Antonymsconfuse, misinterpretconfuse, obscure, complicate
Common mistakesConfused with 'defy' which means to resist or challenge., Using 'define' without an object, e.g., saying 'define' alone., Incorrectly spelled as 'defin' or 'defene'.Using 'explain' without an object, e.g., 'I will explain' instead of 'I will explain the concept.', Confusing 'explain' with 'describe' – 'explain' is about making something clear, while 'describe' is about detailing., Misusing the tense, e.g., saying 'I explained' when referring to a future action.
Usage notesUse 'define' when you want to explain something clearly. It's suitable for academic and casual contexts, but avoid using it in very informal settings.Use 'explain' when you want to clarify or make something easier to understand. It's appropriate in both speaking and writing, but avoid using it in highly formal contexts where more technical terms might be preferred.

See it in real clips

Define
Explain

Frequently asked questions: Define vs Explain

What's the difference between Define and Explain?

Define: To explain the meaning of a word or idea. Explain: To make something clear or easy to understand.

Which is more advanced: Define and Explain?

Define is the highest level, at B1, on the CEFR scale.

Are Define and Explain the same CEFR level?

Define: B1, Explain: A1 on the CEFR scale.

What part of speech are Define and Explain?

Define: verb, Explain: verb.

Can you show an example of each?

Define: Can you define the term 'photosynthesis' for us? Explain: Can you explain how this machine works?

Can I use Define and Explain interchangeably?

Not always. Define and Explain are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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